Out-of-body experiences are real in the sense that matters most: people genuinely have them, they can be produced deliberately in a laboratory, and the neural machinery behind them is partly understood.
What has never been demonstrated is the claim that makes them interesting to most people - that something leaves the body and perceives from outside it.
Those two statements are both true, and almost everything written on this subject drops one of them.
What the laboratory has shown
Blanke, 2002. Olaf Blanke and colleagues were mapping the brain of a patient being evaluated for epilepsy surgery. Stimulating the right angular gyrus - part of the temporoparietal junction - repeatedly produced the sensation of leaving her body and viewing it from above. Increasing the current increased the effect. The finding was published in Nature.
This is the single most important result in the field. It established that the full experience of being outside your body can be produced by direct interference with one brain region.
Ehrsson, 2007. Henrik Ehrsson induced OBE-like illusions in healthy volunteers using head-mounted displays and conflicting visual and tactile input. Participants reported the sense of being located behind their own bodies. Published in Science.
This mattered because it removed the need for neurological abnormality. Feed the brain contradictory information about where the body is, and the sense of self-location moves.
What both establish: self-location is constructed. Your brain continuously builds a model of where “you” are, using vision, touch, balance and proprioception. When those inputs conflict or the integrating region misfires, the model can place you somewhere your body is not - and it will feel completely real, because that model is what feeling real consists of.
What has never been shown
The decisive test is straightforward to describe: someone reports information from their out-of-body vantage point that they could not have obtained otherwise. A number on a high shelf. A target in another room.
Attempts have been made for over a century. None has produced a replicable positive result.
Charles Tart, 1968. A subject known as “Miss Z” reportedly read a five-digit number placed on a shelf above her bed. It is still the most-cited case. It was a single subject, the controls had acknowledged weaknesses - including the possibility of reflection - and it was never successfully replicated.
The AWARE studies. Sam Parnia’s large multi-hospital studies of awareness during cardiac arrest placed visual targets in resuscitation areas. They documented that people do report structured experiences during arrest, which is a genuine finding. They produced essentially no verified perception of the concealed targets.
The pattern across a century is consistent: rich, sincere, detailed reports; no verified information transfer.
The strongest sceptical account
Susan Blackmore began as a parapsychologist expecting to find evidence and became the field’s most rigorous critic. Beyond the Body (1982) sets out the case: OBEs are what happens when the brain, deprived of reliable sensory input, builds a model of the world and the self from memory and expectation.
That predicts several things that turn out to be true. The environment should be built from memory and be imperfect - and reports of the bedroom often contain small errors. Content should follow expectation - and it does, closely. And the experience should be inducible by disrupting the model - which Blanke and Ehrsson demonstrated.
It is a strong account. It is not a proof, because “the brain can produce this” does not establish “the brain always produces this”.
Why the brain does it
The current picture, in plain terms:
- The temporoparietal junction integrates signals about body position and ownership.
- Damage, stimulation or conflicting input to that region disrupts self-location.
- Sleep transitions are a natural source of that conflict: in REM the body is paralysed and external input is suppressed while the brain remains highly active, so the model is running with unusually poor data.
- This is why OBE reports cluster around sleep onset, waking, sleep paralysis, anaesthesia, extreme fatigue, migraine and near-death states. They share the same feature: normal body-model input is unavailable or contradictory.
The honest position
- Documented: OBE sensations can be induced by stimulating the right angular gyrus (Blanke) and by multisensory conflict in healthy people (Ehrsson). The temporoparietal junction is involved in self-location. Reports cluster around states with disrupted body input.
- Well-supported hypothesis: the experience is a disturbance of the brain’s self-location model. Consistent with everything measured, and it makes predictions that hold.
- Reported but unverified: perception of anything the person could not otherwise know.
- Not established: that consciousness leaves the body.
Two things worth saying to different readers.
If you have had one: nothing here says you imagined it or that it was not profound. The experience is real, it is measurable in its effects, and it is common enough to be well documented. What is unresolved is what it consists of.
If you consider the question closed in either direction: it is not. “The brain can generate this” is not the same as “this is only the brain”, and a century of failed verification attempts is not proof of impossibility either. It is, however, a long time without a positive result.
What would settle it
Worth stating, because it is unusually clear for a contested subject. A single, properly controlled, replicated demonstration of information obtained from an out-of-body vantage point that the person could not have acquired by ordinary means.
That is the whole test. It has been attempted repeatedly and has not been met. Until it is, the parsimonious reading is the neurological one - held with the appropriate degree of confidence rather than as a settled fact.
Common questions
Are out-of-body experiences real?
The experiences are unambiguously real and can be induced in a laboratory. Whether anything leaves the body has not been demonstrated.
What part of the brain causes them?
The temporoparietal junction, particularly the right angular gyrus. Stimulating it directly has produced OBE sensations.
Has anyone proved consciousness leaves the body?
No. The decisive test - verified perception of something otherwise unknowable - has never been passed under controlled conditions.
Does science explain OBEs completely?
It explains how the experience can be produced and why it occurs where it does. It has not ruled out other interpretations, and the mechanism being sufficient is not the same as it being the whole story. We give an honest answer to whether astral projection is real in full.
Are OBEs a sign of a medical problem?
Usually not. They are common in healthy people, especially around sleep. They do occur in epilepsy, migraine and some neurological conditions, so recurrent episodes with other symptoms are worth mentioning to a doctor.
Is a near-death experience the same thing?
They overlap - the out-of-body component is a common NDE feature - but NDEs include additional elements. We cover the differences separately.
Sources and further reading
- Blanke, O., Ortigue, S., Landis, T., & Seeck, M. (2002). Stimulating illusory own-body perceptions. Nature, 419, 269-270.
- Ehrsson, H. H. (2007). The experimental induction of out-of-body experiences. Science, 317, 1048.
- Blackmore, S. (1982). Beyond the Body: An Investigation of Out-of-the-Body Experiences. Heinemann.
- Blanke, O., & Arzy, S. (2005). The out-of-body experience: disturbed self-processing at the temporo-parietal junction. The Neuroscientist, 11(1), 16-24.
